Herzberg states

Fig. 3 Total photodissociation cross section for O2 in the Herzberg states. This work (ab initio) corresponds to the use of ab initio potential energy curves and This work (RKR) to the use of RKR potentials constructed on the experimental data [87], Comparison is made with the works of Shardanand and Prasad Rao [149], Herman and Mental [83], Pirre et al. [129], Johnston et al. [88], Cheung et al. [37], Jenouvrier et al. [86], Yoshino et al. [184], Yoshino et al. [185] and Buijsse et al. [19]...

Tables for all degenerate point groups, giving the symmetry species of vibrational combination states resulting from the excitation of one quantum of each of two different degenerate vibrations and of vibrational overtone states resulting from the excitation of two quanta of the same degenerate vibration, are given in the books by Herzberg and by Hollas, referred to in the bibliography.

A lower lying singlet state Ag discovered by G. Herzberg. 

Hart, J. F., and Herzberg, G., Phys. Rev. 106, 79, Twenty parameter eigenfunction and energy values for the ground state of He and He-like ions. ... 

G. Herzberg, Molecular Spectra and Molecular Structure, Vol. II - Infrared and Raman Spectra of Polyatomic Molecules, Van Nostrand Reinhold, New York, 1945 In the crystalline state, it is more convenient to speak about multi-phonon processes since the modes from the whole dispersion range of the first Brillouin zone are allowed to contribute according to the conservation of energy and momentum of the phonons involved in the process... 

The above results of ab initio calculation for the, 431 [ state of NCN (completed by those employing hypothetical values for s and, 4so) correspond to the schematic presentation of the effect of combined vibronic and spin-orbit couplings onto the spectral structure of 3II states of linear triatomics, carried out by Hougen [32] and reproduced in Herzberg s book (see Fig. 9 and accompanied discussion in [5]). A more detailed insight can be achieved by inspecting the perturbative formulae given in Appendix A. 

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